Acacian/aegis

v0.5.0 Feature

This release adds 3 notable features for engineering teams evaluating rollout.

Published 2mo MCP Security & Auth

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✓ No known CVEs patched

Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

agent-security ai-agent-security ai-agents ai-governance ai-safety ai-security

+14 more

audit-trail compliance guardrails langchain llm-security mcp mcp-security model-context-protocol pii-detection policy-as-code policy-engine policy-testing prompt-injection selection-governance

Affected surfaces

auth rbac

Summary

AI summary

New aegis-mcp-proxy --wrap command adds transparent AI governance to any MCP server.

Full changelog

MCP Proxy Server

New aegis-mcp-proxy command — transparent governance proxy for any MCP server.

What's new

aegis-mcp-proxy --wrap: Wrap any MCP server with Aegis governance. Every tool call passes through security scanning, policy checks, guardrails, and audit logging — transparently.
Zero code changes: Claude Desktop, Cursor, and Windsurf users can add AI governance with a single JSON config line.
Full governance pipeline: MCPSecurityGate (tool poisoning, rug-pull detection, argument sanitization) → Policy evaluation → Guardrails (PII/injection) → Audit log (SQLite).
Multi-server support: Wrap multiple MCP servers with --config aegis-proxy.yaml.

Usage

{
  "mcpServers": {
    "filesystem": {
      "command": "uvx",
      "args": ["--from", "agent-aegis[mcp]", "aegis-mcp-proxy",
               "--wrap", "npx", "-y",
               "@modelcontextprotocol/server-filesystem", "/home"]
    }
  }
}

Install

pip install 'agent-aegis[mcp]'

Full Changelog: https://github.com/Acacian/aegis/compare/v0.4.2...v0.5.0

View diff on GitHub

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About Acacian/aegis

Policy-based governance for AI agent tool calls. YAML policies, approval gates, risk assessment, and audit logging. Cross-platform: LangChain, OpenAI, Anthropic, MCP.

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